List of top Chemistry Questions on p -Block Elements

Arrange the following according to their decreasing oxidizing power : BrO₄^-, IO₄^-, CIO₄^-

Which of the following represents the correct order of metallic character of the given elements?

Match List I with List II Column I(Molecule/ions)Column III (No of lone pairs of $e^-$ on central metal atom)A$ IF_7$iThreeB$ICl_4^-$iiOneC$XeF_6$iiiTwoD$ XeF_2 $ivZero Choose the correct answer from the options given below:

Match List I with List II

LIST I		LIST II
A	Chlorophyll	1	$Na _2 CO _3$
B	Soda ash	2	$CaSO _4$
C	Dentistry, Ornamental work	3	$Mg ^{2+}$
D	Used in white washing	4	$Ca ( OH )_2$

The Lewis acid character of boron tri halides follows the order :

Sum of $\pi$-bonds present in peroxodisulphuric acid and pyrosulphuric acid is___________

Compound A reacts with $NH _4 Cl$ and forms a compound B.

Compound B reacts with $H _2 O$ and excess of $CO _2$ to form compound $C$ which on passing through or reaction with saturated $NaCl$ solution forms sodium hydrogen carbonate Compound $A , B$ and $C$, are respectively.

Match List I with List II

LIST I		LIST II
A	X_eF₄	I	See-saw
B	SF₄	II	Square planar
C	NH₄+	III	Bent T-shaped
D	BrF₃	IV	Tetrahedral

Choose the correct answer from the options given below :

$H_2O_2$ behave like reducing agent in which of the following reactions:

Total number of acidic oxides among $N_2O_3,NO_2, N_2O,Cl_2O_7,SO_2,CO,CaO,Na_2O$ and NO is ____ .

Given below are two statements, one is labelled as Assertion $A$ and the other is labelled as Reason $R$
Assertion A: Beryllium has less negative value of reduction potential compared to the other alkaline earth metals
Reason R: Beryllium has large hydration energy due to small size of $Be ^{2+}$ but relatively large value of atomization enthalpy
In the light of the above statements, choose the most appropriate answer from the options given below

Match List I with List II

LIST I Elements		LIST II Colour imparted to the flame
A	K	1	Brick Red
B	Ca	2	Violet
C	Sr	3	Apple Green
D	Ba	4	Crimson Red

Choose the correct answer from the options given below:

Taking stability as the factor, which one of the following represents correct relationship?

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Helium is used to dilute oxygen in diving apparatus.
Reason R: Helium has high solubility in O₂.
In the light of the above statements, choose the correct answer from the options given below.

Match List-I with List – II :

	List-I (Oxoacids of Sulphur)		List-II (Bonds)
A	Peroxodisulphuric acid	I	Two S–OH, Four S=O, One S–O–S
B	Sulphuric acid	II	Two S–OH, One S=O
C	Pyrosulphuric acid	III	Two S–OH, Four S=O, One S–O–O–S
D	Sulphurous acid	IV	Two S–OH, Two S=O

Choose the correct answer from the options given below.

S₁: Be⁺² has higher SRP than other alkaline earth metals.
S₂: Be⁺² has higher hydration energy and greater △aH (atomisation enthalpy) than other alkaline earth metals.

The stability of $Cu^{2+}$ is more than $Cu^+$ salts in aqueous solution due to

Match List-I with List-Il:

	List-I		List-II
A.	Coke	I.	Carbon atoms are sp³ hybridized.
B.	Diamond	II.	Used as a dry lubricant.
C.	Fullerene	III.	Used as a reducing agent.
D.	Graphite	IV.	Cage like molecules